1 Reply Latest reply on Nov 3, 2020 11:50 AM by AlbertB_56

    S25FL128S - timing

    MaVa_1501601

      Hello,

       

      how do i determine the maximum read frequency of the S25FL128S?
      I want to do a quad read and select the maximum frequency that i can use.

      I see that the maximum tv (Clock Low to Output Valid) time is 6.5ns. The MCU that i use has a setting time of 1.5ns.

      So the maximum frequency that i can use is 1 / (2 * (6.5ns + 1.5ns)) = 62,5MHz

       

      Is this a correct assumption or can i use a higher frequency? If yes, whow do I determine this higher frequency? What are the limits?

       

      Best regards,

      Mathias Vanbelle

        • 1. Re: S25FL128S - timing
          AlbertB_56

          Hello Mathias,

           

          The maximum (Quad READ) frequency in regards to the S25FL128Sxx is 104MHz, provided that VIO = VCC = 2.7V to 3.6V.

           

          The maximum (Quad READ) frequency in regards to the S25FL128Sxx is 66MHz, provided that (VIO = 1.65V to 2.7V, VCC = 2.7V to 3.6V)

           

          Refer to page 52, Table 27. Latency Codes for SDR Enhanced High Performance in the S25FL128Sxx datasheet:

             https://www.cypress.com/file/448601/download

           

           

           

          Best regards,

          Albert

          Cypress Semiconductor Corp.

          An Infineon Technologies Company